This competition is open to entrants in the UK only. You must be 18 or over to participate and proof of identity and age may be required. Employees of Trinity Mirror or their family members are not permitted to enter the competition. To enter, you must answer you the question correctly, inputting into the form along with your contact details before the competition closes at 23:59 on Friday 24th March. There will be four winners, each winning a £50 gift card for ClassicFootballShirts.co.uk. The winners will be drawn at random from all correct entrants and announced on the Football London website on Friday 24th March. For full Trinity Mirror competition rules, visit here.